Tuesday, May 28, 2019

IWISTAO HIFI 3 Inches Full Range Speaker 2x25W 4Ohms 78Hz-19.5KHz 88dB Oak Labyrinth Speakers for Tube Amp

Listen to the sound is far wider sound field, better resolution, better layer structured. We are intoxicated by the music, the melody of each neuron start wondered if peristalsis, high, medium and low frequency is very balance, so fantastic! The sound of the human voice is warm, soft and pure, and natural loose, smaller noise pollution, rich musical taste, great flavor, also has a good low-frequency performance, is a treat for the ears, very enjoyable for long time listening and you dont feel tired.

Its sound quality is excellent, fresh and pure and hearty, the overall coherence and excellent resolving power, high-frequency delicate transparent, rich in detail, round and full midrange, natural and real. Also its sound is very charming, it will achieve a very good bass performance particularly if adopt maze speaker cabinet.


The speaker uses a 3-inch NdFeB strong magnetic unit. Its low-frequency density is very good, dynamically distinct, the high-frequency extension and air feel are better, and the human voice is sweeter. This uit, first of all, is a magnetic circuit system, tombarthite NdFeB magnetic structure plus a short-circuiting copper sleeve, which solves the thoroughness of medium-high frequency from the starting point. But the selection of cone is more painstaking, cone is mainly composed of bass and medium-high sound. After various screenings, cotton and linen fiber is selected finally. And, the treble must be rigid and soft, then the bamboo plus bark fiber is selected. Through countless trials and adjustments, the effect finally conquered out ears. The final results are that its medium-high frequency density is very good, very thorough, and the background is clean.





Wednesday, May 22, 2019

DIY Labyrinth Speaker with IWISTAO cabinets from Pioneer PE12 monster alnico

This video is made by a real audiophile, who used a pair IWISTAO Labyrinth Empty Cabinet and his full range pioneer speaker units to diy his labyrinth speakers, also took him a lot efforts to finish it, thank him and thank his sharing...




There is also a video of the assembling process from him.


Tuesday, April 2, 2019

Leave the sadness to yourself from IWISTAO Bluetooth Speaker with solid wood cabinet

Leave the sadness to yourself from IWISTAO Bluetooth Speaker with solid wood cabinet

The song "Leave the sadness to yourself" from IWISTAO Bluetooth Speaker, which is make of solid wood cabinet.

Saturday, March 2, 2019

HIFI Preamplifier Electronical 3 Way Crossover Linkwitz-Riley Filter Cro...

Although many friends put a lot of money and efforts to preamplifier, unfortunately they may experiences a little frustration in final output. It is hardly difficult to solve this problem to use excellent pre-divider circuit of preamplifier plus multiple power amplifiers, our series of electronic crossover board and amplifier board can perfectly realize your dreams!

Crossover PCBA is constituted by renowned Linkwitz-Riley filter. Linkwitz-Riley filter, mainly for the active filter circuit, for example, it is used in many sophisticated multi-way electronic crossover systems. The characteristics of this filter is up to 4 stages attenuation slope, in other words, every one octave frequency sound energy will be attenuated 24dB, i.e. attenuation slope of -24dB / Oct (Oct ie Octave, an octave interval of the mean). Meanwhile, in the entire audio band (20Hz-20kHz), Linkwitz-Riley filter has a very flat phase response, which is far better than Butterworth filter after filter signal, no phase distortion, which is widely admired by audiophiles.



IWISTAO Discrete Components FM Radio Board Stereo LA3401 Decoding DC12V

Will you like a discrete components FM Radio with warm sound? There is the board for you.

The receiving part adopts the discrete component split frequency tuning head as a HF receiving unit. The PCBA adopts double balanced proportional discriminator with excellent sound quality, and also optimizes its layout of the intermediate frequency circuit PCB, improves the stability of the intermediate frequency. And it uses a LA3401 decoding chip as FM stereo decoder, whose resolution is up to 70dB,its noise ratio is up to 95 dB. At the same time, a first-stage FM mixed signal preamplifier is added, which improve the problem that the LA3401 standard circuit cannot be driven in weak signal, so that each radio station can achieve good mediation resolution. After then, the LA3401 has no decoding noise and is comparable to the LA3450 chip.

This is a stereo FM radio finished board with discrete components. You only connect DC12V power adapter and speakers then you can enjoy wonderful FM radio. Or, you may make a wooden casing and DIY it as a vintage radio.